1351126506121 has 6 divisors (see below), whose sum is σ = 1571718588810. Its totient is φ = 1158108433776.

The previous prime is 1351126506101. The next prime is 1351126506181. The reversal of 1351126506121 is 1216056211531.

It can be written as a sum of positive squares in only one way, i.e., 1330227756025 + 20898750096 = 1153355^2 + 144564^2 .

It is not a de Polignac number, because 1351126506121 - 2¹⁹ = 1351125981833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351126506101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13787005116 + ... + 13787005213.

It is an arithmetic number, because the mean of its divisors is an integer number (261953098135).

Almost surely, 2^{1351126506121} is an apocalyptic number.

It is an amenable number.

1351126506121 is a deficient number, since it is larger than the sum of its proper divisors (220592082689).

1351126506121 is an equidigital number, since it uses as much as digits as its factorization.

1351126506121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27574010343 (or 27574010336 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 1351126506121 in words is "one trillion, three hundred fifty-one billion, one hundred twenty-six million, five hundred six thousand, one hundred twenty-one".